Microsoft slammed the decision to impose a second, larger fine for failing to pay the original fine. It argued that it wasn't given enough time to appeal, and that it still didn't know how much a reasonable rate it was expected to charge in the first place.

It was though Microsoft was given a punishment without being told exactly how to prevent such actions in the future.

The Redmond-based software giant turned heads this month when it said it would only allow Internet Explorer 10 in the desktop mode of its tablet version of Windows 8, named Windows RT. Both Mozilla and Google publicly accused Microsoft of abusing its dominant position in the browser market, with what could spin into another European antitrust investigation.